<?php

namespace backend\models;

use yii\base\Model;
use yii\data\ActiveDataProvider;
use backend\models\Elective;

/**
 * ElectiveSearch represents the model behind the search form of `backend\models\Elective`.
 */
class ElectiveSearch extends Elective
{
    /**
     * {@inheritdoc}
     */
    public function rules()
    {
        return [
            [['ID', 'XSID', 'JXKCID'], 'integer'],
            [['XXSJ', 'SHZT'], 'safe'],
            [['PSCJ', 'SYCJ', 'SJCJ', 'KSCJ', 'ZCJ', 'HDXF'], 'number'],
        ];
    }

    /**
     * {@inheritdoc}
     */
    public function scenarios()
    {
        // bypass scenarios() implementation in the parent class
        return Model::scenarios();
    }

    /**
     * Creates data provider instance with search query applied
     *
     * @param array $params
     *
     * @return ActiveDataProvider
     */
    public function search($params)
    {
        $query = Elective::find();

        // add conditions that should always apply here

        $dataProvider = new ActiveDataProvider([
            'query' => $query,
        ]);

        $this->load($params);

        if (!$this->validate()) {
            // uncomment the following line if you do not want to return any records when validation fails
            // $query->where('0=1');
            return $dataProvider;
        }

        // grid filtering conditions
        $query->andFilterWhere([
            'ID' => $this->ID,
            'XSID' => $this->XSID,
            'JXKCID' => $this->JXKCID,
            'XXSJ' => $this->XXSJ,
            'PSCJ' => $this->PSCJ,
            'SYCJ' => $this->SYCJ,
            'SJCJ' => $this->SJCJ,
            'KSCJ' => $this->KSCJ,
            'ZCJ' => $this->ZCJ,
            'HDXF' => $this->HDXF,
        ]);

        $query->andFilterWhere(['like', 'SHZT', $this->SHZT]);

        return $dataProvider;
    }
}
